Re: 2.6.17-rc1-mm1, nfsd/reiser4 BUG

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On Tue, 2006-04-04 at 01:45 -0700, Andrew Morton wrote:
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.17-rc1/2.6.17-rc1-mm1/

While running the following command on a Reiser4 partition mounted on a
MD RAID-0 device on top of two SCSI disks:

find -type f -print0 | xargs -0 cat > /dev/null

I was running this on the local machine, not on the NFS mounts.  In
fact, the NFS mounts should have had none, or very little, activity.

I started getting the following error messages.  I had been running
2.6.16-rc5-mm3 and hadn't noticed anything like that, so when I get some
time I may try to isolate it, if I can reproduce it.

But, in case anyone else knows the problem, here it is

BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
 printing eip:
e0a9a3d2
*pde = 00000000
Oops: 0002 [#1]
PREEMPT
last sysfs file: /devices/pci0000:00/0000:00:00.0/class
Modules linked in: it87 hwmon_vid hwmon i2c_isa parport_pc lp parport nfsd exportfs lockd autofs4 sunrpc iptable_filter ip_tables x_tables binfmt_misc dm_mod ohci_hcd eepro100 uhci_hcd ehci_hcd sis_agp agpgart i2c_sis630 i2c_core snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc e100 via_rhine sis900 mii crc32 ide_cd cdrom usbcore
CPU:    0
EIP:    0060:[<e0a9a3d2>]    Not tainted VLI
EFLAGS: 00010246   (2.6.17-rc1-mm1 #1)
EIP is at nfsd_cache_lookup+0x169/0x2e3 [nfsd]
eax: 00000000   ebx: dd05a120   ecx: ddc3da38   edx: 00000000
esi: c815319e   edi: 00000000   ebp: 00000007   esp: ddfe1f40
ds: 007b   es: 007b   ss: 0068
Process nfsd (pid: 2170, threadinfo=ddfe1000 task=c148a070)
Stack: <0>de05d000 ddc3d9e0 00000011 00000003 e0ac9d00 de05d000 e0aa80bc e0aa7fa0
       e0aa80bc e0a93049 c51b9014 de05d064 e0aa80bc e0aa7fa0 de05d000 e0ab27d2
       0000003d dd7eaba0 e0aa7fa0 de05d040 c51b9014 000186a3 00000007 c51b9008
Call Trace:
 <e0a93049> nfsd_dispatch+0x39/0x16f [nfsd]   <e0ab27d2> svc_process+0x38c/0x5c6 [sunrpc]
 <e0a93509> nfsd+0x19a/0x315 [nfsd]   <e0a9336f> nfsd+0x0/0x315 [nfsd]
 <c0101005> kernel_thread_helper+0x5/0xb
Code: 28 8b 54 24 0c 89 53 30 8b 53 24 a1 e8 ba 3b c0 89 43 34 89 d0 c1 e8 18 31 d0 8b 54 24 04 83 e0 3f 8d 0c 82 8b 03 8b 53 04 85 c0 <89> 02 74 03 89 50 04 8b 01 85 c0 89 03 74 03 89 58 04 89 19 80
EIP: [<e0a9a3d2>] nfsd_cache_lookup+0x169/0x2e3 [nfsd] SS:ESP 0068:ddfe1f40
 <6>note: nfsd[2170] exited with preempt_count 1
BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
 printing eip:
e0a9a3d2
*pde = 00000000
Oops: 0002 [#2]
PREEMPT
last sysfs file: /devices/pci0000:00/0000:00:00.0/class
Modules linked in: it87 hwmon_vid hwmon i2c_isa parport_pc lp parport nfsd exportfs lockd autofs4 sunrpc iptable_filter ip_tables x_tables binfmt_misc dm_mod ohci_hcd eepro100 uhci_hcd ehci_hcd sis_agp agpgart i2c_sis630 i2c_core snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc e100 via_rhine sis900 mii crc32 ide_cd cdrom usbcore
CPU:    0
EIP:    0060:[<e0a9a3d2>]    Not tainted VLI
EFLAGS: 00010246   (2.6.17-rc1-mm1 #1)
EIP is at nfsd_cache_lookup+0x169/0x2e3 [nfsd]
eax: 00000000   ebx: dd05a160   ecx: ddc3da38   edx: 00000000
esi: c815319e   edi: 00000000   ebp: 00000007   esp: dff43f40
ds: 007b   es: 007b   ss: 0068
Process nfsd (pid: 2167, threadinfo=dff43000 task=df599550)
Stack: <0>de7f5000 ddc3d9e0 00000011 00000003 e0ac9d00 de7f5000 e0aa80bc e0aa7fa0
       e0aa80bc e0a93049 d7196014 de7f5064 e0aa80bc e0aa7fa0 de7f5000 e0ab27d2
       0000003d dd7eaba0 e0aa7fa0 de7f5040 d7196014 000186a3 00000007 d7196008
Call Trace:
 <e0a93049> nfsd_dispatch+0x39/0x16f [nfsd]   <e0ab27d2> svc_process+0x38c/0x5c6 [sunrpc]
 <e0a93509> nfsd+0x19a/0x315 [nfsd]   <e0a9336f> nfsd+0x0/0x315 [nfsd]
 <c0101005> kernel_thread_helper+0x5/0xb
Code: 28 8b 54 24 0c 89 53 30 8b 53 24 a1 e8 ba 3b c0 89 43 34 89 d0 c1 e8 18 31 d0 8b 54 24 04 83 e0 3f 8d 0c 82 8b 03 8b 53 04 85 c0 <89> 02 74 03 89 50 04 8b 01 85 c0 89 03 74 03 89 58 04 89 19 80
EIP: [<e0a9a3d2>] nfsd_cache_lookup+0x169/0x2e3 [nfsd] SS:ESP 0068:dff43f40
 <6>note: nfsd[2167] exited with preempt_count 1
BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
 printing eip:
e0a9a3d2
*pde = 00000000
Oops: 0002 [#3]
PREEMPT
last sysfs file: /devices/pci0000:00/0000:00:00.0/class
Modules linked in: it87 hwmon_vid hwmon i2c_isa parport_pc lp parport nfsd exportfs lockd autofs4 sunrpc iptable_filter ip_tables x_tables binfmt_misc dm_mod ohci_hcd eepro100 uhci_hcd ehci_hcd sis_agp agpgart i2c_sis630 i2c_core snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc e100 via_rhine sis900 mii crc32 ide_cd cdrom usbcore
CPU:    0
EIP:    0060:[<e0a9a3d2>]    Not tainted VLI
EFLAGS: 00010246   (2.6.17-rc1-mm1 #1)
EIP is at nfsd_cache_lookup+0x169/0x2e3 [nfsd]
eax: 00000000   ebx: dd05a1a0   ecx: ddc3da38   edx: 00000000
esi: c815319e   edi: 00000000   ebp: 00000007   esp: de555f40
ds: 007b   es: 007b   ss: 0068
Process nfsd (pid: 2171, threadinfo=de555000 task=dfe23030)
Stack: <0>dd7cda00 ddc3d9e0 00000011 00000003 e0ac9d00 dd7cda00 e0aa80bc e0aa7fa0
       e0aa80bc e0a93049 c54bb014 dd7cda64 e0aa80bc e0aa7fa0 dd7cda00 e0ab27d2
       0000003d dd7eaba0 e0aa7fa0 dd7cda40 c54bb014 000186a3 00000007 c54bb008
Call Trace:
 <e0a93049> nfsd_dispatch+0x39/0x16f [nfsd]   <e0ab27d2> svc_process+0x38c/0x5c6 [sunrpc]
 <e0a93509> nfsd+0x19a/0x315 [nfsd]   <e0a9336f> nfsd+0x0/0x315 [nfsd]
 <c0101005> kernel_thread_helper+0x5/0xb
Code: 28 8b 54 24 0c 89 53 30 8b 53 24 a1 e8 ba 3b c0 89 43 34 89 d0 c1 e8 18 31 d0 8b 54 24 04 83 e0 3f 8d 0c 82 8b 03 8b 53 04 85 c0 <89> 02 74 03 89 50 04 8b 01 85 c0 89 03 74 03 89 58 04 89 19 80
EIP: [<e0a9a3d2>] nfsd_cache_lookup+0x169/0x2e3 [nfsd] SS:ESP 0068:de555f40
 <6>note: nfsd[2171] exited with preempt_count 1
BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
 printing eip:
e0a9a3d2
*pde = 00000000
Oops: 0002 [#4]
PREEMPT
last sysfs file: /devices/pci0000:00/0000:00:00.0/class
Modules linked in: it87 hwmon_vid hwmon i2c_isa parport_pc lp parport nfsd exportfs lockd autofs4 sunrpc iptable_filter ip_tables x_tables binfmt_misc dm_mod ohci_hcd eepro100 uhci_hcd ehci_hcd sis_agp agpgart i2c_sis630 i2c_core snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc e100 via_rhine sis900 mii crc32 ide_cd cdrom usbcore
CPU:    0
EIP:    0060:[<e0a9a3d2>]    Not tainted VLI
EFLAGS: 00010246   (2.6.17-rc1-mm1 #1)
EIP is at nfsd_cache_lookup+0x169/0x2e3 [nfsd]
eax: 00000000   ebx: dd05a1e0   ecx: ddc3da38   edx: 00000000
esi: c815319e   edi: 00000000   ebp: 00000007   esp: ddfccf40
ds: 007b   es: 007b   ss: 0068
Process nfsd (pid: 2166, threadinfo=ddfcc000 task=df488a90)
Stack: <0>ddfebe00 ddc3d9e0 00000011 00000003 e0ac9d00 ddfebe00 e0aa80bc e0aa7fa0
       e0aa80bc e0a93049 c5629014 ddfebe64 e0aa80bc e0aa7fa0 ddfebe00 e0ab27d2
       0000003d dd7eaba0 e0aa7fa0 ddfebe40 c5629014 000186a3 00000007 c5629008
Call Trace:
 <e0a93049> nfsd_dispatch+0x39/0x16f [nfsd]   <e0ab27d2> svc_process+0x38c/0x5c6 [sunrpc]
 <e0a93509> nfsd+0x19a/0x315 [nfsd]   <e0a9336f> nfsd+0x0/0x315 [nfsd]
 <c0101005> kernel_thread_helper+0x5/0xb
Code: 28 8b 54 24 0c 89 53 30 8b 53 24 a1 e8 ba 3b c0 89 43 34 89 d0 c1 e8 18 31 d0 8b 54 24 04 83 e0 3f 8d 0c 82 8b 03 8b 53 04 85 c0 <89> 02 74 03 89 50 04 8b 01 85 c0 89 03 74 03 89 58 04 89 19 80
EIP: [<e0a9a3d2>] nfsd_cache_lookup+0x169/0x2e3 [nfsd] SS:ESP 0068:ddfccf40
 <6>note: nfsd[2166] exited with preempt_count 1
BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
 printing eip:
e0a9a3d2
*pde = 00000000
Oops: 0002 [#5]
PREEMPT
last sysfs file: /devices/pci0000:00/0000:00:00.0/class
Modules linked in: it87 hwmon_vid hwmon i2c_isa parport_pc lp parport nfsd exportfs lockd autofs4 sunrpc iptable_filter ip_tables x_tables binfmt_misc dm_mod ohci_hcd eepro100 uhci_hcd ehci_hcd sis_agp agpgart i2c_sis630 i2c_core snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc e100 via_rhine sis900 mii crc32 ide_cd cdrom usbcore
CPU:    0
EIP:    0060:[<e0a9a3d2>]    Not tainted VLI
EFLAGS: 00010246   (2.6.17-rc1-mm1 #1)
EIP is at nfsd_cache_lookup+0x169/0x2e3 [nfsd]
eax: 00000000   ebx: dd05a220   ecx: ddc3da38   edx: 00000000
esi: c815319e   edi: 00000000   ebp: 00000007   esp: de477f40
ds: 007b   es: 007b   ss: 0068
Process nfsd (pid: 2169, threadinfo=de477000 task=debdba70)
Stack: <0>de05d600 ddc3d9e0 00000011 00000003 e0ac9d00 de05d600 e0aa80bc e0aa7fa0
       e0aa80bc e0a93049 db0ed014 de05d664 e0aa80bc e0aa7fa0 de05d600 e0ab27d2
       0000003d dd7eaba0 e0aa7fa0 de05d640 db0ed014 000186a3 00000007 db0ed008
Call Trace:
 <e0a93049> nfsd_dispatch+0x39/0x16f [nfsd]   <e0ab27d2> svc_process+0x38c/0x5c6 [sunrpc]
 <e0a93509> nfsd+0x19a/0x315 [nfsd]   <e0a9336f> nfsd+0x0/0x315 [nfsd]
 <c0101005> kernel_thread_helper+0x5/0xb
Code: 28 8b 54 24 0c 89 53 30 8b 53 24 a1 e8 ba 3b c0 89 43 34 89 d0 c1 e8 18 31 d0 8b 54 24 04 83 e0 3f 8d 0c 82 8b 03 8b 53 04 85 c0 <89> 02 74 03 89 50 04 8b 01 85 c0 89 03 74 03 89 58 04 89 19 80
EIP: [<e0a9a3d2>] nfsd_cache_lookup+0x169/0x2e3 [nfsd] SS:ESP 0068:de477f40
 <6>note: nfsd[2169] exited with preempt_count 1
BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
 printing eip:
e0a9a3d2
*pde = 00000000
Oops: 0002 [#6]
PREEMPT
last sysfs file: /devices/pci0000:00/0000:00:00.0/class
Modules linked in: it87 hwmon_vid hwmon i2c_isa parport_pc lp parport nfsd exportfs lockd autofs4 sunrpc iptable_filter ip_tables x_tables binfmt_misc dm_mod ohci_hcd eepro100 uhci_hcd ehci_hcd sis_agp agpgart i2c_sis630 i2c_core snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc e100 via_rhine sis900 mii crc32 ide_cd cdrom usbcore
CPU:    0
EIP:    0060:[<e0a9a3d2>]    Not tainted VLI
EFLAGS: 00010246   (2.6.17-rc1-mm1 #1)
EIP is at nfsd_cache_lookup+0x169/0x2e3 [nfsd]
eax: 00000000   ebx: dd05a260   ecx: ddc3da38   edx: 00000000
esi: c815319e   edi: 00000000   ebp: 00000007   esp: ddf70f40
ds: 007b   es: 007b   ss: 0068
Process nfsd (pid: 2165, threadinfo=ddf70000 task=dfe1aa90)
Stack: <0>ddfeb200 ddc3d9e0 00000011 00000003 e0ac9d00 ddfeb200 e0aa80bc e0aa7fa0
       e0aa80bc e0a93049 db575014 ddfeb264 e0aa80bc e0aa7fa0 ddfeb200 e0ab27d2
       0000003d dd7eaba0 e0aa7fa0 ddfeb240 db575014 000186a3 00000007 db575008
Call Trace:
 <e0a93049> nfsd_dispatch+0x39/0x16f [nfsd]   <e0ab27d2> svc_process+0x38c/0x5c6 [sunrpc]
 <e0a93509> nfsd+0x19a/0x315 [nfsd]   <e0a9336f> nfsd+0x0/0x315 [nfsd]
 <c0101005> kernel_thread_helper+0x5/0xb
Code: 28 8b 54 24 0c 89 53 30 8b 53 24 a1 e8 ba 3b c0 89 43 34 89 d0 c1 e8 18 31 d0 8b 54 24 04 83 e0 3f 8d 0c 82 8b 03 8b 53 04 85 c0 <89> 02 74 03 89 50 04 8b 01 85 c0 89 03 74 03 89 58 04 89 19 80
EIP: [<e0a9a3d2>] nfsd_cache_lookup+0x169/0x2e3 [nfsd] SS:ESP 0068:ddf70f40
 <6>note: nfsd[2165] exited with preempt_count 1

-- 
Zan Lynx <[email protected]>

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